<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        let sing =new Object();
        sing.name = '李宗盛-阴天';
        sing.words='阴天，在不开灯的房间';
        sing.hear=function (){
            console.log('周杰伦的晴天');
        }
        for(let key in sing){
            console.log(key,sing[key]);
        }
    </script>
</body>
</html>